Touch display substrate, touch display apparatus having the same, pixel arrangement, and fabricating method thereof

ABSTRACT

The present application discloses a touch display substrate including an array of a plurality of pixels. Each pixel includes a first region and a second region in plan view of the touch display substrate. Each pixel includes a first electrode layer on a base substrate comprising plurality of first electrode blocks in the first region, each of which corresponding to a subpixel; and a second electrode block in the second region; a first light emitting layer in the first region on a side of the plurality of first electrode blocks distal to the base substrate; a second light emitting layer in the second region on a side of the second electrode block distal to the base substrate; a second electrode layer in the first region on a side of the first light emitting layer distal to the plurality of first electrode blocks; and a touch electrode layer in the second region on a side of the second light emitting layer distal to the second electrode block; the touch electrode layer and the second electrode layer spaced apart and electrically insulated from each other.

TECHNICAL FIELD

The present invention relates to display technology, more particularly,to a touch display substrate, a touch display apparatus having the same,a pixel arrangement, and a fabricating method thereof.

BACKGROUND

Organic light emitting diodes (OLED) use the principles ofelectrophosphorescence to convert electrical energy in an OLED intolight in a highly efficient manner. OLEDs are self-emitting apparatusesthat do not require a backlight. Having the advantages of a wide viewingangle, high contrast, fast response, high flexibility, a wide workingtemperature range, and a simpler structure and manufacturing process,they have found a wide range of applications in display field.

In conventional touch display organic light emitting apparatuses, atouch module is added onto the display module. The display module andthe touch module may be manufactured separately. The touch module isbonded onto the display panel. This type of touch display panel has alarge thickness and is prone to damage.

SUMMARY

In one aspect, the present invention provides a touch display substrate,comprising: an array of a plurality of pixels, each pixel having a firstregion and a second region in plan view of the touch display substrate,each pixel comprising a first electrode layer on a base substratecomprising a plurality of first electrode blocks in the first region,each of which corresponding to a subpixel; and a second electrode blockin the second region; a first light emitting layer in the first regionon a side of the plurality of first electrode blocks distal to the basesubstrate; a second light emitting layer in the second region on a sideof the second electrode block distal to the base substrate; a secondelectrode layer in the first region on a side of the first lightemitting layer distal to the plurality of first electrode blocks; and atouch electrode layer in the second region on a side of the second lightemitting layer distal to the second electrode block; the touch electrodelayer and the second electrode layer spaced apart and electricallyinsulated from each other.

Optionally, each pixel further comprises a pattern spacer layer on thebase substrate dividing the pixel into the first region and the secondregion; the pattern spacer layer spacing apart and electricallyinsulating the touch electrode layer and the second electrode layer; andthe pattern spacer layer spacing apart and electrically insulating thefirst light emitting layer and the second light emitting layer.

Optionally, the touch electrode layer is in a same layer as the secondelectrode layer, and the first light emitting layer is in a same layeras the second light emitting layer.

Optionally, one second electrode block in the second region iselectrically connected to the touch electrode layer.

Optionally, the one second electrode block in the second region iselectrically connected to the touch electrode layer through a conductivechannel in the second light emitting layer, the conductive channelcomprising a sintered conductive material comprising at least one of alight emitting material of the second light emitting layer, a conductivematerial of the one second electrode block in the second region, and aconductive material of the touch electrode layer.

Optionally, the touch display substrate further comprises a plurality ofelectrode lead wires in the first region and a plurality of touchcontrol lead wires in the second region; the plurality of touch controllead wires in a same layer as the plurality of electrode lead wires; theplurality of touch control lead wires electrically connected to thetouch electrode layer through a conductive channel in the second lightemitting layer, the conductive channel comprising a sintered conductivematerial comprising at least one of a light emitting material of thesecond light emitting layer, a conductive material of a touch controllead wire in the second region, and a conductive material of the touchelectrode layer.

Optionally, each pixel further comprises a pixel compensation circuit inthe second region.

Optionally, each pixel comprises a subpixel of a first color, a subpixelof a second color, a subpixel of a third color in the first region, anda plurality of pixel compensation circuits in the second region; eachpixel compensation circuit is connected to one of the subpixel oldiefirst color from a same pixel, the subpixel of the second color and thesubpixel of the third color from adjacent pixels.

Optionally, each second region is surrounded by the subpixel of thefirst color from the same pixel, the subpixel of the second color from afirst adjacent pixel, and two subpixels oldie third color respectivelyfrom a second and a third adjacent pixels; the first color, the secondcolor, and the third color are different colors selected form red,green, and blue.

Optionally; each pixel comprises three pixel compensation circuits, eachpixel compensation circuit is connected to one of the subpixel of thefirst color from a same pixel, the subpixel of the second color from afirst adjacent pixel, and the subpixel of the third color from a secondadjacent pixel.

Optionally, each pixel comprises four pixel compensation circuits, eachpixel compensation circuit is connected to one of the subpixel of thefirst color from a same pixel, the subpixel of the second color from afirst adjacent pixel, the subpixel of the third color from a secondadjacent pixel, and the subpixel of the third color from a thirdadjacent pixel.

Optionally, each pixel comprises a subpixel of a first color, a subpixelof a second color, a subpixel of a third color in the first region, atouch subpixel in the second region, the touch electrode layer isconfigured to operate in a time-division driving mode, the time-divisionmode comprising a display mode and a touch control mode, the touchelectrode layer is a touch control electrode for conducting touchsignals during the touch control mode, and one second electrode block inthe second region and the touch electrode layer are electrodes forapplying voltage signal to the second light emitting layer duringdisplay mode, each pixel further comprises four pixel compensationcircuits, each pixel compensation circuit is connected to one of thesubpixel of the first color from a same pixel, the subpixel of thesecond color from a first adjacent pixel, the subpixel of the thirdcolor from a second adjacent pixel, and the touch subpixel.

Optionally, the first light emitting layer is an integral white lightemitting layer; each pixel further comprises a plurality of colorfilters on a side of the second electrode layer distal to the firstlight emitting layer, each of which corresponding to a subpixel.

Optionally, the touch electrode layer is configured to operate in atime-division driving mode, the time-division mode comprising a displaymode and a touch control mode, the touch electrode layer, is a touchcontrol electrode for conducting touch, signals during the touch controlmode, and one second electrode block in the second region and the touchelectrode layer are electrodes for applying voltage signal to the secondlight emitting layer during display mode.

Optionally, the touch display substrate further comprises a plurality ofthin film transistors on a p-silicon substrate, each of whichcorresponding to one first electrode block or one second electrodeblock.

Optionally, the first electrode layer is an anode layer, and the secondelectrode layer is a cathode layer.

In another aspect, the present invention provides a pixel arrangementcomprising an array of a plurality of pixels, wherein each pixelcomprises a subpixel of a first color, a subpixel of a second color, asubpixel of a third color, a touch subpixel; and a plurality of pixelcompensation circuits in the touch subpixel; each pixel compensationcircuit is connected to one of the subpixel of the first color from asame pixel, the subpixel of the second color and the subpixel of thethird color from adjacent pixels; and each touch subpixel is surroundedby the subpixel of the first color from a same pixel, the subpixel ofthe second color from a first adjacent pixel, and two subpixels of thethird color respectively from a second and a third adjacent pixels.

Optionally, each pixel comprises three pixel compensation circuits, eachpixel compensation circuit is connected to one of the subpixel of thefirst color from a same pixel, the subpixel of the second color from afirst adjacent pixel, the subpixel of the third color from a secondadjacent pixel.

Optionally, each pixel comprises four pixel compensation circuits, eachpixel compensation circuit is connected to one of the subpixel of thefirst color from a same pixel, the subpixel of the second color from afirst adjacent pixel, the subpixel of the third color from a secondadjacent pixel, and the subpixel of the third color from a thirdadjacent pixel.

Optionally, each pixel comprises four pixel compensation circuits, eachpixel compensation circuit is connected to one of the subpixel of thefirst color from a same pixel, the subpixel of the second color from afirst adjacent pixel, the subpixel of the third color from a secondadjacent pixel, and the touch subpixel.

In another, aspect, the present invention provides a method offabricating a touch display substrate comprising forming an array of aplurality, of pixels, each pixel comprising, a fast region and a second,region in plan view of the touch display substrate; wherein forming eachpixel comprising forming a first electrode layer on a base substrate;the step of forming the first electrode layer comprising forming aplurality of first electrode blocks in the first region, each of whichcorresponding to a subpixel; and forming a second electrode block in thesecond region; thrilling a first light emitting layer in the firstregion on a side of the plurality of first electrode blocks distal tothe base substrate; forming a second light emitting layer in the secondregion on a side of the second electrode block distal to the basesubstrate; forming a second electrode layer in the first region on aside of the first light emitting layer distal to the plurality of firstelectrode blocks; and forming a touch electrode layer in the secondregion on a side of the second light emitting layer distal to the secondelectrode block; the touch electrode layer and the second electrodelayer spaced apart and electrically insulated from each other.

Optionally, the method further comprises forming a pattern spacer layeron the base substrate dividing each pixel into the first region and thesecond region; the pattern spacer layer spacing apart and electricallyinsulating the touch electrode layer and the second electrode layer; andthe pattern spacer layer spacing apart and electrically insulating thefirst light emitting layer and the second light emitting layer.

Optionally, the pattern spacer layer is made of a photoresist material,the step of forming each pixel comprises depositing a photoresist layeron the base substrate having the first electrode layer; exposing thephotoresist layer with a mask plate having a pattern corresponding tothe pattern spacer layer; developing the exposed photoresist layerthereby forming the pattern spacer layer; depositing an organic lightemitting material layer on a side of the first electrode layer distal tothe base substrate having the pattern spacer layer, thereby forming thefirst light emitting layer in the first region and the second lightemitting layer in the second region; and depositing an electrodematerial layer on a side of the organic light emitting material layerdistal to the first electrode layer, thereby forming the secondelectrode layer in the first region and the touch electrode layer in thesecond region.

Optionally, the method further comprises electrically connecting onesecond electrode block in the second region to the touch electrodelayer.

Optionally, the step of electrically connecting the one second electrodeblock in the second region to the touch electrode layer comprisessintering a portion of a multilayer structure comprising the one secondelectrode block in the second region, the second light emitting layer,and the touch electrode layer, and forming a conductive channel in thesecond light emitting layer, the conductive channel comprising asintered conductive material comprising at least one of a light emittingmaterial, a conductive material of the one second electrode block, and aconductive material of the touch electrode layer.

Optionally, the step of forming each pixel further comprises forming apixel compensation circuit in the second region.

Optionally, the first region comprises a subpixel of a first color, asubpixel of a second color, a subpixel of a third color; forming eachpixel, comprises forming a plurality of pixel compensation circuits inthe second region, each of which connected to one of the subpixel of thefirst color from a same pixel, the subpixel of the second color and thesubpixel of the third color from adjacent pixels; the method comprisingforming the array of the plurality of pixels so that each second regionis surrounded by the subpixel of the first color from a same pixel, thesubpixel of the second color from an adjacent pixel, and two subpixelsof the third color respectively from two other adjacent pixels.

Optionally, the touch electrode layer is formed in a same layer as thesecond electrode layer, and the first light emitting layer is formed ina same layer as the second light emitting layer.

Optionally, the method further comprises forming a plurality ofelectrode lead wires in the first region and a plurality of touchcontrol lead wires in the second region in a same layer; andelectrically connecting the plurality of touch control lead wires to thetouch electrode layer through a conductive channel in the second lightemitting layer; wherein the step of electrically connecting theplurality of touch control lead wires to the touch electrode layercomprises sintering a portion of a multilayer structure comprising atouch control lead wire in the second region, the second light emittinglayer, and the touch electrode layer; and forming a conductive channelin the second light emitting layer, the conductive channel comprising asintered conductive material comprising at least one of a light emittingmaterial, a conductive material of the touch control lead wire, and aconductive material of the touch electrode layer.

In another aspect, the present invention provides a touch displayapparatus comprising a touch display substrate described herein orfabricated by a method described herein.

BRIEF DESCRIPTION OF THE FIGURES

The following drawings are merely examples for illustrative purposesaccording to various disclosed embodiments and are not intended to limitthe scope of the present invention.

FIG. 1A is a diagram illustrating the structure of a touch displaysubstrate in some embodiments.

FIG. 1B is a diagram illustrating the structure of a touch displaysubstrate in some embodiments.

FIG. 1C is a diagram illustrating the structure of a touch displaysubstrate in some embodiments.

FIG. 2 is a diagram illustrating a pixel arrangement in a touch displaysubstrate in some embodiments.

FIG. 3 is a diagram illustrating a pixel arrangement in a conventionaltouch display substrate.

FIG. 4 is a diagram illustrating an arrangement for pixel compensationcircuits in a touch display substrate in some embodiments.

FIG. 5 is a diagram illustrating an arrangement for pixel compensationcircuits in a touch display substrate in some embodiments.

FIG. 6 is a flow chart illustrating a method of fabricating a touchdisplay substrate in some embodiments.

FIG. 7A is a diagram illustrating the structure of a pattern spacerlayer in some embodiments.

FIG. 7B is a diagram illustrating the structure of a pattern spacerlayer in sonic embodiments.

DETAILED DESCRIPTION

The disclosure will now describe more specifically with reference to thefollowing embodiments. It is to be noted that the following descriptionsof some embodiments are presented herein for purpose of illustration anddescription only. It is not intended to be exhaustive or to be limitedto the precise form disclosed.

The present disclosure provides, inter alia, a novel in-cell touchdisplay substrate, a touch display apparatus having the same, and afabricating method thereof In some embodiments, the present touchdisplay substrate utilizes a subpixel area of each pixel as a touchsensor area, and electrically insulating a portion of the cathode (oranode) as the touch electrode. The present design provides a compactin-cell touch structure which may be manufactured together with thedisplay module. Moreover, the touch lead wires may be optionallydisposed in a same layer as the electrode lead wires for cathode oranode, the touch electrode and the touch lead wires may be electricallyconnected by sintering a portion of the light emitting layer. To furtherdecrease the thickness and increase the aperture ratio of the displaysubstrate, the touch display substrate may be designed to have a novelpixel arrangement so that multiple pixel compensation circuits frommultiple subpixels may be disposed in a same touch subpixel area.

In some embodiments, the present touch display substrate includes anarray of a plurality of pixels. Each pixel includes a first region and asecond region in plan view of the touch display substrate. In someembodiments, each pixel includes a first electrode layer on a basesubstrate comprising a plurality of first electrode blocks in the firstregion, each of which corresponding to a subpixel, and at least onesecond electrode block in the second region; a first light emittinglayer in the first region on a side of the plurality of first electrodeblocks distal to the base substrate; a second light emitting layer inthe second region on a side of the second electrode block distal to thebase substrate; a second electrode layer in the first region on a sideof the first light emitting layer distal to the plurality of firstelectrode blocks; and a touch electrode layer in the second region on aside of the second light emitting layer distal to the second electrodeblock. Optionally, the touch electrode layer and the second electrodelayer spaced apart and electrically insulated from each other.Optionally, the first light emitting layer and the second light emittinglayer are spaced apart and electrically insulated from each other.Optionally, the touch electrode layer is in a same layer as the secondelectrode layer. Optionally, the first light emitting layer is in a samelayer as the second light emitting layer. Optionally, the touchelectrode layer and the second electrode layer spaced apart andelectrically insulated from each other, the first light emitting layerand the second light emitting layer are spaced apart and electricallyinsulated from each other, the touch electrode layer is in a same layeras the second electrode layer, and the first light emitting layer is ina same layer as the second light emitting layer.

In another aspect, the present disclosure provides a method offabricating a touch display substrate described herein. The touchdisplay substrate includes an array of a plurality of pixels, with eachpixel including a first region and a second region in plan view of thetouch display substrate. In some embodiments, the step of forming eachpixel includes forming a first electrode layer on a base substrate; thestep of forming the first electrode layer comprising forming a pluralityof first electrode blocks in the first region, each of whichcorresponding to a subpixel; and forming a second electrode block in thesecond region; forming a first light emitting, layer in the first regionon a side of the plurality of first electrode blocks distal to the basesubstrate; forming a second light emitting layer in the second region ona side of the second electrode block distal to the base substrate;forming a second electrode layer in the first region on a side of thefirst light emitting layer distal to the plurality of first electrodeblocks; and forming a touch electrode layer in the second region on aside of the second light emitting layer distal to the second electrodeblock. Optionally, the touch electrode layer and the second electrodelayer are formed to be spaced apart and electrically insulated from eachother. Optionally, the first light emitting layer and the second lightemitting layer are formed to be spaced apart and electrically insulatedfrom each other. Optionally, the touch electrode layer is formed in asame layer as the second electrode layer. Optionally, the first lightemitting layer is formed in a same layer as the second light emittinglayer. Optionally, the touch electrode layer and the second electrodelayer are firmed to be spaced apart and electrically insulated from eachother, the first light emitting layer and the second light emittinglayer are formed to be spaced apart and electrically insulated from eachother, the touch electrode layer is formed in a same layer as the secondelectrode layer, and the first light emitting layer is formed in a samelayer as the second light emitting layer.

Various methods may be practiced to space apart and electricallyinsulate the touch electrode layer from the second electrode layer, andthe first light emitting layer from the second light emitting layer. Forexample, the patterns of the first light emitting layer, the secondlight emitting layer, the touch electrode layer, and the secondelectrode layer may be formed using a mask plate so that there is a gapbetween the first light emitting layer from the second light emittinglayer, and a gap between the touch electrode layer and the secondelectrode layer. In some embodiments, a single light emitting layer maybe formed in a single process (e.g., a deposition process), and thesingle light emitting layer may be patterned to form the first lightemitting layer and the second light emitting layer (e.g., etching a gapin the single light emitting layer dividing it into two layers).Similarly, a single electrode layer may be formed in a single process(e.g., a deposition process), and the single electrode layer may bepatterned to form the touch electrode layer and the second electrodelayer (e.g., etching a gap in the single electrode layer dividing itinto two layers).

In some embodiments, each pixel includes a pattern spacer layer on thebase substrate dividing the pixel into the first region and the secondregion. The pattern spacer layer spaces apart and electrically insulatesthe touch electrode layer and the second electrode layer from eachother. Optionally, the pattern spacer layer spaces apart andelectrically insulates the first light emitting layer and the secondlight emitting layer from each other.

Accordingly, the step of forming each pixel may optionally includeforming a pattern spacer layer on the base substrate dividing each pixelinto the first region and the second region. The pattern spacer layer isformed to space apart and electrically insulate the touch electrodelayer and the second electrode layer; and space apart and electricallyinsulate the first light emitting layer and the second light emittinglayer.

FIG. 1A is a diagram illustrating the structure of a touch displaysubstrate in some embodiments. Referring to FIG. 1A, the touch displaysubstrate in the embodiment includes an array of a plurality of pixels1. Each pixel 1 may include a plurality of subpixels, e.g., subpixels11A, 11B, 11C, and 11D. As shown in FIG. 1A, the touch display substratein the embodiment includes a first electrode layer 4 on a base substrate20. The first electrode layer 4 includes a plurality of first electrodeblocks, e.g., 4A and a second electrode block, in other words one ormore second electrode block, e.g., 4B. Moreover, the touch displaysubstrate includes a pattern spacer layer 5 dividing the pixel 1 into afirst region 2 and a second region 3 in plan view of the base substrate20. The first region 2 includes a plurality of subpixels 11A, 11B, and11C capable of image display, each of which includes a driving thin filmtransistor 10. The second region 3 includes at least one touch subpixel11D for touch control. Optionally, the touch subpixel 11D is alsocapable of image display. Optionally, the touch subpixel 11D includes adriving thin film transistor 10. Each driving thin film transistor 10 iselectrically connected to a first electrode block 4A or a secondelectrode block 4B.

Various embodiments may be practiced to make and use the touch displaysubstrate. For example, the base substrate may be made of anyappropriate material, e.g., glass, quartz, or a transparent resin. Thethin film transistor 10 may be a thin film transistor including a gateelectrode, a source electrode, a drain electrode, and an active layer.

In some embodiments, the base substrate is a p+ silicon substrate. Asshown in FIG. 1A, the thin film transistor 10 may be a thin filmtransistor including a gate structure 40, an N-well 50, and a fieldoxide (FOX) isolation structure 60. In some embodiments, the basesubstrate is an n+ silicon substrate. Optionally, the thin filmtransistor including a gate structure, a P-well, and a field oxide (FOX)isolation structure 60.

Optionally, the first electrode layer is an anode layer, and the secondelectrode layer is a cathode layer. Optionally, the first electrodelayer is a cathode layer, and the second electrode layer is an anodelayer.

As shown in FIG. 1A, the first electrode blocks 4A are in the firstregion 2, and the second electrode block 4B is in the second region 3.Each of the first electrode blocks 4A corresponds to one of subpixels11A, 11B, 11C. The second electrode block 4B corresponds to subpixel11D.

In some embodiments, the touch display substrate includes a lightemitting layer 6 on a side of the first electrode layer 4 distal to thebase substrate 20. The pattern spacer layer 5 divides the light emittinglayer 6 into a first light emitting layer 6A in the first region 2 and asecond light emitting layer 6B in the second region 3, i.e., the firstlight emitting layer GA and the second light emitting layer 6B arespaced apart by the pattern spacer layer 5. The first light emittinglayer 6A corresponds to subpixels 11A, 11B, and 11C, and the secondlight emitting layer 6B corresponds to subpixel 11D. Because the patternspacer layer 5 is made of electrically non-conductive material such as aphotoresist, the first light emitting layer GA and the second lightemitting layer 6B are also electrically insulated by the pattern spacerlayer 5.

The first light emitting layer GA and the second light emitting layer 6Bmay be made in a single process, e.g., a single deposition process.Thus, the first light emitting layer 6A and the second light emittinglayer 6B may be in a same layer. Optionally, the first light emittinglayer 6A and the second light emitting layer 6B may be made in twodeposition processes. Accordingly, the first light emitting layer 6A andthe second light emitting layer 6B may be in different layers.

As shown in FIG. 1A, the first light emitting layer 6A is on a side ofthe first electrode blocks 4A distal to the base substrate 20, and thesecond light emitting layer 6B is on side of the second electrode blocks4B distal to the base substrate 20.

Referring to FIG. 1A, the touch display substrate in the embodimentfurther includes a second electrode layer 7A on a side of the lightemitting layer 6 distal to the first electrode layer 4. Specifically,the second electrode layer 7A is on a side of the first light emittinglayer 6A distal to the first electrode blocks 4A. The second electrodelayer 7A is in the first region 2. Optionally, the second electrodelayer 7A is an integral electrode layer.

Referring to FIG. 1A, the touch display substrate in the embodimentfurther includes a touch electrode layer 78 on a side of the lightemitting layer 6 distal to the first electrode layer 4. Specifically,the touch electrode layer 78 is on a side of the second light emittinglayer 6B distal to the second electrode block 4B. The touch electrodelayer 7B is in the second region 3. Optionally, the touch electrodelayer 7B is an integral electrode layer.

As shown in FIG. 1A, the first light emitting layer 6A is on a side ofthe second electrode layer 7A proximal to the base substrate 20, and thesecond light emitting layer 6B is on side of the touch electrode layer7B proximal to the base substrate 20.

In some embodiments, the touch display substrate includes one or moreorganic layer between the first light emitting layer 6 and the firstelectrode layer 4. Optionally, the touch display substrate includes oneor more organic layer between the first light emitting layer 6A and thefirst electrode layer 4 in the first region (e.g., the first electrodeblock 4A). Optionally, the touch display substrate includes one or moreorganic layer between the second light emitting layer 6B and the firstelectrode layer 4 in the second region (e.g., the second electrode block4B). In some embodiments, the touch display substrate includes one ormore organic layer between the first light emitting layer 6A and thesecond electrode layer 7A. In some embodiments, the touch displaysubstrate includes one or more organic layer between the second lightemitting layer 6B and the touch electrode layer 7B. Optionally, the oneor more organic layer is a carrier transport layer such as a holetransport layer or an electron transport layer. Optionally, the one ormore organic layer is a carrier injection layer such as a hole injectionlayer or an electron injection layer.

Optionally, the first light emitting layer 6A is an integral white lightemitting layer. Optionally, the second light emitting layer 6B is anintegral white light emitting layer. Optionally, the first lightemitting layer 6A and the second light emitting layer 6B are formed in asingle process.

Optionally, the first light emitting layer 6A includes a plurality oflight emitting blocks, each of which is capable of emitting a light of adifferent color, e.g., a red light emitting block, a green lightemitting block, a blue light emitting block, or a white light emittingblock, Each light emitting block corresponds to a subpixel, e.g.,subpixel 11A, 11B, or 11C. Each light emitting block corresponds to afirst electrode block 4A. Optionally, the touch display substrateincludes a pixel definition layer insulating each of the light emittingblocks. Optionally, the light emitting blocks include a red lightemitting layer. Optionally, the light emitting blocks include a greenlight emitting layer. Optionally, the light emitting blocks include ablue light emitting layer. Optionally, the light emitting blocks includea white light emitting layer. In some embodiments, the touch displaysubstrate includes one or more organic layer between a first lightemitting block and a first electrode block 4A. In some embodiments, thetouch display substrate includes one or more organic layer between afirst light emitting block and the second electrode layer 7A.Optionally, the one or more organic layer is a carrier transport layersuch as a hole transport layer or an electron transport layer.Optionally, the one or more organic layer is a carrier injection layersuch as a hole injection layer or an electron injection layer.

The pattern spacer layer 5 separates the second electrode layer 7A inthe first region 2 apart from the touch electrode layer 7B in the secondregion 3, i.e. the second electrode layer 7A and the touch electrodelayer 7B are spaced apart by the pattern spacer layer 5. The secondelectrode layer 7A corresponds to subpixels 11A, 11B, and 11C, and thetouch electrode layer 7B corresponds to subpixel 11D. Because thepattern spacer layer 5 is made of non-conductive material such as aphotoresist, the second electrode layer 7A and the touch electrode layer7B are also electrically insulated by the pattern spacer layer 5.

The second electrode layer 7A and the touch electrode layer 7B may bemade in a single process, e.g., a single deposition process. Thus, thesecond electrode layer 7A and the touch electrode layer 7B may be in asame layer. Optionally, the second electrode layer 7A and the touchelectrode layer 7B may be made in two deposition processes. Accordingly,the second electrode layer 7A and the touch electrode layer 7B may be indifferent layers.

In some embodiments, the second electrode block 4B in the second regionis electrically connected to the touch electrode layer 7B. Variousembodiments may be practiced to electrically connect the secondelectrode block 4B to the touch electrode layer 7B. For example, thesecond electrode block 4B and the touch electrode layer 7B may beelectrically connected through a via extending through the second lightemitting layer 6B. As discussed hereinthroughout, the second electrodeblock 4B and the touch electrode layer 7B may also be electricallyconnected through a conductive channel in the second light emittinglayer 6B. The conductive channel includes a sintered conductive materialincluding a light emitting material, a conductive material of the secondelectrode block in the second region, and a conductive material of thetouch electrode layer.

FIG. 1B is a diagram illustrating the structure of a touch displaysubstrate in some embodiments. Referring to FIG. 1B, the touch displaysubstrate in the embodiment includes a conductive channel 8 in thesecond light emitting layer 6B. The conductive channel 8 may be formedby sintering the second light emitting layer 6B, the touch electrodelayer 7B, and the second electrode block 4B, e.g., by a laser. Theconductive channel 8 includes a sintered conductive material includingat least one of a light emitting material of the second light emittinglayer 6B, a conductive material of the second electrode block 4B, and aconductive material of the touch electrode layer 7B. Optionally, aportion of the touch electrode layer 7B corresponding to the conductivechannel 8 also includes a sintered material comprising at least aconductive material of the touch electrode layer 7B and a light emittingmaterial of the second light emitting layer 6B. Optionally, a portion ofthe second electrode block 4B corresponding to the conductive channel 8also includes a sintered material comprising at least a conductivematerial of the second electrode block 4B and a light emitting materialof the second light emitting layer 6B. The conductive channel 8 is atleast partially sintered so that the conductive channel 8 becomeselectrically conductive, electrically connecting the second electrodeblock 4B and the touch electrode layer 7B.

In some embodiments, touch display substrate includes an additionallayer between the second light emitting layer 6B and the secondelectrode block 4B in the second region, or between the second lightemitting layer 6B and the touch electrode layer 7B. Optionally, thetouch display substrate includes one or more organic layer between thesecond light emitting layer 6B and the second electrode block 4B in thesecond region. Optionally, the touch display substrate includes one ormore organic layer between the second light emitting layer 6B and thetouch electrode layer 7B. Optionally, the one or more organic layer is acarrier transport layer such as a hole transport layer or an electrontransport layer. Optionally, the one or more organic layer is a carrierinjection layer such as a hole injection layer or an electron injectionlayer.

Accordingly, the conductive channel 8 may optionally include a sinteredconductive material including a light emitting material of the secondlight emitting layer 6B, a conductive material of the second electrodeblock 4B, a conductive material of the touch electrode layer 7B, and amaterial of the additional layer between the second light emitting layer6B and the second electrode block 4B in the second region, or betweenthe second light emitting layer 6B and the touch electrode layer 7B.Examples of the additional layers include a carrier transport layer suchas a hole transport layer or an electron transport layer and a carrierinjection layer such as a hole injection layer or an electron injectionlayer. Optionally, the conductive channel 8 includes a sinteredconductive material including a light emitting material of the secondlight emitting layer 6B, a conductive material of the second electrodeblock 4B, a conductive material of the touch electrode layer 7B, and amaterial of a carrier transport layer (e.g., a hole transport layer oran electron transport layer). Optionally, the conductive channel 8includes a sintered conductive material including a light emittingmaterial of the second light emitting layer 6B, a conductive material ofthe second electrode block 4B, a conductive material of the touchelectrode layer 7B, and a material of a carrier injection layer (e.g., ahole injection layer or an electron injection layer). Optionally, theconductive channel 8 includes a sintered conductive material including alight emitting material of the second light emitting layer 6B, aconductive material of the second electrode block 4B, a conductivematerial of the touch electrode layer 7B, a material of a carriertransport layer (e.g., a hole transport layer or an electron transportlayer), and a material of a carrier injection layer (e.g., a holeinjection layer or an electron injection layer).

FIG. 1C is a diagram illustrating the structure of a touch displaysubstrate in some embodiments. Referring to FIG. 1C, the touch displaysubstrate in the embodiment includes a conductive channel 8′ in thesecond light emitting layer 6B. As shown in FIG. 1C, the touch displaysubstrate in the embodiment includes a plurality of electrode lead wires80 in the first region and a plurality of touch control lead wires 70 inthe second region. The plurality of touch control lead wires 70 are in asame layer as the plurality of electrode lead wires 80. The plurality oftouch control lead wires 70 may be electrically connected to the touchelectrode layer 7B through a conductive channel 8′ in the second lightemitting layer 6B. The conductive channel 8′ may be formed by sinteringthe second light emitting layer 6B, the touch electrode layer 7B, andthe touch control lead wires 70, e.g., by a laser. The conductivechannel 8′ includes a sintered conductive material including at leastone of a light emitting material of the second light emitting layer 6B,a conductive material of the touch control lead wires 70, and aconductive material of the touch electrode layer 7B. Optionally, aportion of the touch electrode layer 7B corresponding to the conductivechannel 8′ also includes a sintered material comprising at least aconductive material of the touch electrode layer 7B and a light emittingmaterial of the second light emitting layer 6B. Optionally, a portion ofthe touch control lead wires 70 corresponding to the conductive channel8′ also includes a sintered material comprising at least a conductivematerial of the touch control lead wires 70 and a light emittingmaterial of the second light emitting layer 6B. The conductive channel8′ is at least partially sintered so that the conductive channel 8′becomes electrically conductive, electrically connecting the touchcontrol lead wires 70 and the touch electrode layer 7B.

In some embodiments, touch display substrate includes an additionallayer between the second light emitting layer 6B and the touch controllead wires 70 in the second region, or between the, second lightemitting layer 6B and the touch electrode layer 7B. Optionally, thetouch display substrate includes one or more organic layer between thesecond light emitting layer GB and the touch control lead wires 70 inthe second region. Optionally, the touch display substrate includes oneor more organic layer between the second light emitting layer 6B and thetouch electrode layer 7B. Optionally, the one or more organic layer is acarrier transport layer such as a hole transport layer or an electrontransport layer. Optionally, the one or more organic layer is a carrierinjection layer such as a hole injection layer or an electron injectionlayer.

Accordingly, the conductive channel 8′ may optionally include a sinteredconductive material including a light emitting material of the secondlight emitting layer 6B, a conductive material of the touch control leadwires 70, a conductive material of the touch electrode layer 7B, and amaterial of the additional layer between the second light emitting layer6B and the touch control lead wires 70 in the second region, or betweenthe second light emitting layer 6B and the touch electrode layer 7B.Examples of the additional layers include a carrier transport layer suchas a hole transport layer or an electron transport layer and a carrierinjection layer such as a hole injection layer or an electron injectionlayer. Optionally, the conductive channel 8′ includes a sinteredconductive material including a light emitting material of the secondlight emitting layer 6B, a conductive material of the touch control leadwires 70, a conductive material of the touch electrode layer 7B, and amaterial of a carrier transport layer (e.g., a hole transport layer oran electron transport layer). Optionally, the conductive channel 8′includes a sintered conductive material including a light emittingmaterial of the second light emitting layer 6B, a conductive material ofthe touch control lead wires 70, a conductive material of the touchelectrode layer 7B, and a material of a carrier injection layer (e.g., ahole injection layer or an electron injection layer). Optionally, theconductive channel 8′ includes a sintered conductive material includinga light emitting material of the second light emitting layer 6B, aconductive material of the touch control ad wires 70, a conductivematerial of the touch electrode layer 7B, a material of a carriertransport layer (e.g., a hole transport layer or an electron transportlayer), and a material of a carrier injection layer (e.g., a holeinjection layer or an electron injection layer).

Because the touch electrode layer 7B may be electrically connected tothe touch control lead wires 70 through the conductive channel 8′, touchcontrol lead wires 70 may be connected to the touch electrode layer 7Bthrough the conductive channel 8′. Accordingly, the touch control leadwires 70 may be formed in a same layer as electrode lead wires 80 fordriving image display in the first region. Optionally, the touch controllead wires 70 are in a same layer as the first electrode lead wires.Optionally, the touch control lead wires 70 are in a same layer as thesecond electrode lead wires.

Referring to EEGs, 1A-1C, the touch display substrate in the embodimentsfurther includes at least one pixel compensation circuit 9 in the secondregion. Examples of pixel compensation circuit 9 include, but are notlimited to, a 6T1C circuit, a 2T1C circuit, a 4T1C circuit, and a 5T1Ccircuit.

In some embodiments, the touch display substrate includes a plurality ofpixel compensation circuits 9 (e.g., 2, 3, 4, or more) in the secondregion. For example, the touch display substrate may include a pluralityof pixel compensation circuits 9, each of which corresponding to adifferent subpixel (e.g., a red subpixel, a green subpixel, or a bluesubpixel).

In another aspect, the present disclosure provides a novel pixelarrangement in the touch display substrate. In some embodiments, a pixelincludes a subpixel of a first color, a subpixel of a second color, asubpixel of a third color, and a second region in the pixel is adjacentto a subpixel of the first color from a same pixel, a subpixel of thesecond color from a first adjacent pixel, and two subpixels of the thirdcolor respectively from a second and a third adjacent pixels. The firstcolor, the second color, and the third color are three different colors,e.g., red, green, and blue.

FIG. 2 is a diagram illustrating a pixel arrangement in a touch displaysubstrate in some embodiments. Referring to FIG. 2, the touch displaysubstrate in the embodiment includes a red subpixel 11A, a greensubpixel 11B, a blue subpixel 11C, and a touch subpixel 11D. Asdiscussed hereinthroughout, the pixel of the present disclosure includesa first region and a second region. The first region includes the redsubpixel 11A, the green subpixel 11B, and the blue subpixel 11C capableof image display. The second region includes the touch subpixel 11D fortouch control. Optionally, the touch subpixel 11D is also capable ofimage display. Each pixel also includes at least one pixel compensationcircuit in the touch subpixel 11D. For example, each pixel may includeat least three pixel compensation circuits in the touch subpixel 11D,each of which is connected to one of the red subpixel 11A, the greensubpixel 11B, and the blue subpixel 11C.

Referring to FIG. 2, the second region (and the touch subpixel 11D) issurrounded by four subpixels, a blue subpixel 11C from the same pixel(on the left side of 11D), a red subpixel 11A front a first adjacentpixel (on the right side of 11D), and two green subpixels 11C from asecond adjacent pixel and a third adjacent pixel (on the upper and lowsides of 11D).

FIG. 3 is a diagram illustrating a pixel arrangement in a conventionaltouch display substrate. Referring to FIG. 3, the second region (and thetouch subpixel 11D) is surrounded by a blue subpixel 11C from the samepixel (on the left side of 11D), a red subpixel 11A from a firstadjacent pixel (on the right side of 11D), and two touch subpixels 11Dfrom a second adjacent pixel and a third adjacent pixel (on the upperand low sides of 11D). Thus, in the conventional touch displaysubstrate, the second region is not surrounded by a green subpixel 11B.As such, it is difficult to dispose a pixel compensation circuitassociated with a green subpixel 11B in the second region.

As compared to the conventional touch display substrate, the secondregion in the present touch display substrate is surrounded by a redsubpixel 11A, a blue subpixel 11C, and two green subpixels 11B.Accordingly, pixel compensation circuits associated with subpixels ofall three colors may be conveniently disposed in a same second region.FIG. 4 is a diagram illustrating an arrangement fair pixel compensationcircuits in a touch display substrate in some embodiments. Referring toFIG. 4, each second region of each pixel includes three sections 11D1,11D2, and 11D3, each of which includes a pixel compensation circuit. Forexample, the second region may include a pixel compensation circuit in11D2 connected to, a red subpixel from a first adjacent pixel (on theright side of touch subpixel), a pixel compensation circuit in 11D3connected to a blue subpixel from a same pixel (on the left side oftouch subpixel), and a pixel compensation circuit in 11D1 connected to agreen subpixel from a second adjacent pixel (on the upper side of touchsubpixel).

The second region may include more than three pixel compensationcircuits. FIG. 5 is a diagram illustrating an arrangement for pixelcompensation circuits in a touch display substrate in some embodiments.Referring to FIG. 5, each second region of each pixel, includes foursections 11D1, 11D2, 11D3, and 11D4, each of which includes a pixelcompensation circuit. For example, the second region may include a pixelcompensation circuit in 11D2 connected to a red subpixel from a firstadjacent pixel (on the right side of touch subpixel), a pixelcompensation circuit in 11D3 connected to a blue subpixel from a samepixel (on the left side of touch subpixel), a pixel compensation circuitin 11D1 connected to, a green subpixel from a second adjacent pixel (onthe upper side of touch subpixel), and a pixel compensation circuit in11D4 connected to a green subpixel from a third adjacent pixel (on thelower side of touch subpixel).

In some embodiments, the touch electrode layer is operated in atime-division driving mode. For example, the time-division driving modemay include a display mode and a touch control mode. The touch electrodelayer is a touch control electrode for conducting touch signals duringthe touch control mode. In display mode, the second electrode block inthe second region and the touch electrode layer are electrodes forapplying voltage signal to the second light emitting layer for imagedisplay during display mode. Optionally, when the touch electrode layeris operated in a tune-division driving mode, the second region mayfurther include a pixel compensation circuit for the touch subpixel. Forexample, the second region may include a pixel compensation circuit in11D2 connected to a red subpixel from a first adjacent pixel (on theright side of touch subpixel), a pixel compensation circuit in 11D3connected to a blue subpixel front a same pixel (on the left side oftouch subpixel), a pixel compensation circuit in 11D1 connected to agreen subpixel from a second adjacent pixel (on the upper side of touchsubpixel), and a pixel compensation circuit in 11D4 for the touchsubpixel itself.

Referring to FIGS. 1A and 1B, the light emitting layer in theembodiments is a white light emitting layer (including the first lightemitting layer 6A and the second light emitting layer 6B). As shown inFIGS. 1A and 1B, each pixel further includes a plurality of colorfilters 30A, 30B, and 30C, in the first region 2. Each of the pluralityof color filters 30A, 30B, and 30C corresponds to a subpixel. Forexample, the color filter 30A may be a red color filter corresponding toa red subpixel, the color filter 30B may be a green color filtercorresponding to a green subpixel, and the color filter 30C may be ablue color filter corresponding to a blue subpixel. Optionally, thefirst light emitting layer 6A is an integral light emitting layer.

In another aspect, the present disclosure provides a method offabricating a touch display substrate. In some embodiments, the methodincludes forming an array of a plurality of pixels. FIG. 6 is a flowchart illustrating a method of fabricating a touch display substrate insome embodiments. Referring to FIG. 6, the step of forming each pixel inthe embodiment includes forming a first electrode layer on a basesubstrate comprising a plurality of first electrode blocks and a secondelectrode block; forming a pattern spacer layer on the base substratedividing each pixel into a first region and a second region in plan viewof the base substrate; forming a light, emitting layer on a side of thefirst electrode layer distal to the base substrate, the light emittinglayer comprising a first light emitting layer in the first region and asecond light emitting layer in the second region, the first lightemitting layer and the second light emitting layer spaced apart by thepattern spacer layer; and forming a second electrode layer and a touchelectrode layer in a same layer on a side of the light emitting layerdistal to the first electrode layer; the second electrode layer in thefirst region, the touch electrode layer in the second region; the touchelectrode layer spaced apart and electrically insulated by the patternspacer layer from the second electrode layer.

Various appropriate materials may be used for making the pattern spacerlayer. In some embodiments, the pattern spacer layer is made of aphotoresist material. FIG. 7A is a diagram illustrating the structure ofa pattern spacer layer in some embodiments. Referring to FIG. 7A, thepattern spacer layer 5 is formed on the base substrate, and a lightemitting material and an electrode material are sequentially depositedon the base substrate having the pattern spacer layer 5. The first lightemitting layer 6A and the second electrode layer 7A are formed in thefirst region. The second light emitting layer 6B and the touch electrodelayer 7B are formed in the second region. As shown in FIG. 7B, thepattern spacer layer electrically insulates the first light emittinglayer 6A in the first region and the second light emitting layer 6B inthe second region; and insulates the second electrode layer 7A in thefirst region and the touch electrode layer 7B in the second region.

During the deposition process, the light emitting material and theelectrode material may also be deposited on the pattern spacer layer 5,forming a third light emitting portion 12 and an electrode layer 13 onthe pattern spacer layer 5. Optionally, the third light emitting portion12 and an electrode layer 13 may be removed (e.g., by etching, milling,etc.) subsequent to the formation of the first tight emitting layer 6A,the second electrode layer 7A, the second light emitting layer 6B andthe touch electrode layer 7B. FIG. 7B is a diagram illustrating thestructure of a pattern spacer layer in some embodiments. Referring toFIG. 7B, the pattern spacer layer 5 is formed on the base substrate, anda light emitting material and an electrode material are sequentiallydeposited on the base substrate having the pattern spacer layer 5. Thelight emitting material and electrode material on the pattern spacerlayer 5 are removed.

Accordingly, in some embodiments, the step of forming each pixelincludes depositing a photoresist layer on the base substrate haying thefirst electrode layer; exposing the photoresist layer with a mask platehaving a pattern corresponding to the pattern spacer layer; anddeveloping the exposed photoresist layer thereby forming the patternspacer layer. Once the pattern spacer layer is formed, the step mayfurther include depositing an organic light emitting material layer on aside of the first electrode layer distal to the base substrate havingthe pattern spacer layer, thereby forming the first light emitting layerin the first region and the second light emitting layer in the secondregion. The first light emitting layer in the first region and thesecond light emitting layer in the second region may be formed in asingle deposition step. Optionally, the first light emitting layer inthe first region and the second light emitting layer in the secondregion may be thrilled separately in two processes. Once the first lightemitting layer in the first region and the second light emitting layerin the second region are formed, the step may further include depositingan electrode material layer on a side of the organic light emittingmaterial layer distal to the first electrode layer, thereby forming thesecond electrode layer in the first region and the touch electrode layerin the second region. The second electrode layer in the first region andthe touch electrode layer in the second region may be formed in a singledeposition step. Optionally, the second electrode layer in the firstregion and the touch electrode layer in the second region may be formedseparately in two processes.

Optionally, the first light emitting layer in the first region and thesecond light emitting layer in the second region are formed in a singledeposition step, and the second electrode layer in the first region andthe touch electrode layer in the second region are formed in a singledeposition step. Optionally, any light emitting material and electrodematerial deposited on a side of the pattern spacer layer distal to thebase substrate may be removed.

In some embodiments, the step of forming the first electrode layerincludes forming a plurality of first electrode blocks in the firstregion, each of which corresponding to a subpixel; and forming a second,electrode block in the, second region. The plurality of first electrodeblocks in the first region and the second electrode block in the secondregion may be formed in a single process, e.g., by a single depositionprocess, and using a single mask for patterning. Optionally, theplurality of first electrode blocks in the first region and the secondelectrode block in the second region are formed separately.

In some embodiments, the step of forming each pixel further includeselectrically connecting the second electrode block in the second regionto the touch electrode layer. Various appropriate methods may bepracticed to electrically connect the second electrode block to thetouch electrode layer. For example, the step may include forming a viaextending through the second light emitting layer thereby electricallyconnecting the second electrode block and the touch electrode layer.

In some embodiments, the step of electrically connecting the secondelectrode block in the second region to the touch electrode layerincludes sintering a portion of a multilayer structure including thesecond electrode block in the second region, the second light emittinglayer, and the touch electrode layer; and forming conductive channel inthe second light emitting layer. The conductive channel includes asintered conductive material having a light emitting material, aconductive material of the second electrode block, and a conductivematerial of the touch electrode layer. Optionally, the sintering stepmay be performed by a laser. The conductive channel is at leastpartially sintered so that the conductive channel is electricallyconductive, electrically connecting the second electrode block and thetouch electrode layer.

As discussed hereinthroughout, touch display substrate may include anadditional layer between the second light emitting layer and the secondelectrode block in the second region, or between the second lightemitting layer and the touch electrode layer. Optionally, the touchdisplay substrate includes one or more organic layer between the secondlight emitting layer and the second electrode block in the secondregion. Optionally, the touch display substrate includes one or moreorganic layer between the second light emitting layer and the touchelectrode layer. Optionally, the one or more organic layer is a carriertransport layer such as a hole transport layer or an electron transportlayer. Optionally, the one or more organic layer is a carrier injectionlayer; such as a hole injection layer or an electron injection layer.

Accordingly, the sintering step may optionally include sintering aportion of a multilayer structure including the second electrode blockin the second region, the second light emitting layer, the touchelectrode layer; the additional layer(s) between the second lightemitting layer and the second electrode block in the second region; andthe additional layer(s) between the second light emitting layer and thetouch electrode layer. Examples of the additional layers include acarrier transport layer such as a bole transport layer or an electrontransport layer and a carrier injection layer such as a hole injectionlayer or an electron injection layer.

In some embodiments, the step of famine each pixel further includeselectrically connecting a plurality of touch control lead wires in thesecond region to the touch electrode layer. Various appropriate methodsmay be practiced to electrically connect the plurality of touch controllead wires to the touch electrode layer. For example, the step mayinclude forming a via extending through the second light emitting layerthereby electrically connecting the touch control lead wires and thetouch electrode layer.

In some embodiments, the step of electrically connecting the touchcontrol lead wires in the second region to the touch electrode layerincludes sintering a portion of a multilayer structure including thetouch control lead wires in the second region, the second light emittinglayer, and the touch electrode layer; and forming conductive channel inthe second light emitting layer. The conductive channel includes asintered conductive material having at least one of a light emittingmaterial, a conductive material of the touch control lead wires, and aconductive material of the touch electrode layer. Optionally, thesintering step may be performed by a laser. The conductive channel is atleast partially sintered so that the conductive channel is electricallyconductive, electrically connecting the touch control lead wires and thetouch electrode layer.

As discussed hereinthroughout, touch display substrate may include anadditional layer between the second light emitting layer and the touchcontrol lead wires in the second region, or between the second lightemitting layer and the touch electrode layer. Optionally, the touchdisplay substrate includes one or more organic layer between the secondlight emitting layer and the touch control lead wires in the secondregion. Optionally, the touch display substrate includes one or moreorganic layer between the second light emitting, layer and the touchelectrode layer. Optionally, the one or more organic layer is a carriertransport layer such as a hole transport layer or an electron transportlayer. Optionally, the one or more organic layer is a carrier injectionlayer such as a hole injection layer or an electron injection layer.

Accordingly, the sintering step may optionally include sintering aportion of a multilayer structure including the touch control lead wiresin the second region, the second light emitting layer, the touchelectrode layer; the additional layer(s) between the second lightemitting layer and the touch control lead wires in the second region;and the additional layer(s) between the second light emitting layer andthe touch electrode layer. Examples of the additional layers include acarrier transport layer such as a hole transport layer or an electrontransport layer and a carrier injection layer such as a hole injectionlayer or an electron injection layer.

In some embodiments, the step of forming each pixel further includesforming a pixel compensation circuit in the second region. Optionally,the step includes forming a plurality of pixel compensation circuits inthe second region.

In some embodiments, the first region includes a subpixel of a firstcolor, a subpixel of a second color, to subpixel of a third color. Thestep of forming each pixel includes forming a plurality of pixelcompensation circuits in the second region, each of which connected toone of the subpixel of the first color from a same pixel, the subpixelof the second color and the subpixel of the third color from adjacentpixels. The method includes forming the array of the plurality of pixelsso that each second region is surrounded by the subpixel of the firstcolor from a same pixel, the subpixel of the second color from anadjacent pixel, and two subpixels of the third color respectively fromtwo other adjacent pixels.

In some embodiments, the step of forming the plurality of pixelcompensation circuits in a simile second region includes forming a pixelcompensation circuit connected to a subpixel of a first color from asame pixel, a pixel compensation circuit connected to a subpixel of asecond color from a first adjacent pixel, and two pixel compensationcircuits connected to two subpixels of a third color from a second and athird adjacent pixels, respectively.

In some embodiments, the step of forming the plurality of pixelcompensation circuits in a single second region includes forming a pixelcompensation circuit connected to a subpixel of a first color from asame pixel, a pixel compensation circuit connected to a subpixel of asecond color from a first adjacent pixel, a pixel compensation circuitconnected to a subpixel of a third color from a second adjacent pixel,and a pixel compensation circuit connected the touch subpixel itself.

In another aspect, the present disclosure provides a touch displayapparatus having a touch display substrate described herein orfabricated by a method described herein. In some embodiments, the touchdisplay substrate is an organic light emitting substrate, and the touchdisplay apparatus is an organic light emitting apparatus. Examples oftouch display apparatuses include, but are not limited to, an electronicpaper, a mobile phone, a tablet computer, a television, a notebookcomputer, a digital album, a GPS, etc.

The foregoing description of the embodiments of the invention has beenpresented for purposes of illustration and description. It is notintended to be exhaustive or to limit the invention to the precise formor to exemplary embodiments disclosed. Accordingly, the foregoingdescription should be regarded as illustrative rather than restrictive.Obviously, many modifications and variations will be apparent topractitioners skilled in this art. The embodiments are chosen anddescribed in order to explain the principles of the invention and itsbest mode practical application, thereby to enable persons skilled inthe art to understand the invention for various embodiments and withvarious modifications as are suited to the particular use orimplementation contemplated. It is intended that the scope of theinvention be defined by the claims appended hereto and their equivalentsin which all terms are meant in their broadest reasonable sense unlessotherwise indicated. Therefore, the term “the invention”, “the presentinvention” or the like does not necessarily limit the claim scope to aspecific embodiment, and the reference to exemplary embodiments of theinvention does not imply a limitation on the invention, and no suchlimitation is to be inferred. The invention is limited only by thespirit and scope of the appended claims. Moreover, these claims mayrefer to use “first”, “second”, etc. following with noun or element.Such terms should be understood as a nomenclature and should not beconstrued as giving the limitation on the number of the elementsmodified by such nomenclature unless specific number has been given. Anyadvantages and benefits described may not apply to all embodiments ofthe invention. It should be appreciated that variations may be made inthe embodiments described by persons skilled in the art withoutdeparting from the scope of the present invention as defined by thefollowing claims. Moreover, no element and component in the presentdisclosure is intended to be dedicated to the public regardless ofwhether the element or component is explicitly recited in the followingclaims.

1. A touch display substrate, comprising: an array of a plurality of pixels, each pixel having a first region and a second region in plan view of the touch display substrate, each pixel comprising: a first electrode layer on a base substrate comprising a plurality of first electrode blocks in the first region, each of which corresponding to a subpixel; and a second electrode block in the second region; a first light emitting layer in the first region on a side of the plurality of first electrode blocks distal to the base substrate; a second light emitting layer in the second region on a side of the second electrode block distal to the base substrate; a second electrode layer in the first region on a side of the first light emitting layer distal to the plurality of first electrode blocks; and a touch electrode layer in the second region on a side of the second light emitting layer distal to the second electrode block; the touch electrode layer and the second electrode layer spaced apart and electrically insulated front each other; wherein each pixel comprises a subpixel of a first color, a subpixel of a second color, a subpixel of a third color in the first region, and a plurality of pixel compensation circuits in the second region; each pixel compensation circuit is connected to one of the subpixel of the first color from a same pixel, the subpixel of the second color and the subpixel of the third color from adjacent pixels.
 2. The touch display substrate of claim 1, wherein each pixel further comprises a pattern spacer layer on the base substrate dividing the pixel into the first region and the second region; the pattern spacer layer spacing apart and electrically insulating the touch electrode layer and the second electrode layer; and the pattern spacer layer spacing apart and electrically insulating the first light emitting layer and the second light emitting layer.
 3. The touch display substrate of claim 1, wherein the touch electrode layer is in a same layer as the second electrode layer, and the first light emitting layer is in a same layer as the second light emitting layer.
 4. The touch display substrate of claim 1, wherein one second electrode block m the second region is electrically connected to the touch electrode layer.
 5. The touch display substrate of claim 4, wherein the one second electrode block in the second region is electrically connected to the touch electrode layer through a conductive channel in the second light emitting layer, the conductive channel comprising a sintered conductive material comprising at least one of a light emitting material of the second light emitting layer, a conductive material of the one second electrode block in the second region, and a conductive material of the touch electrode layer.
 6. The touch display substrate of claim 1, further comprising a plurality of electrode lead wires in the first region and a plurality of touch control lead wires in the second region; the plurality of touch control lead wires in a same layer as the plurality of electrode lead wires; the plurality of touch control lead wires electrically connected to the touch electrode layer through a conductive channel in the second light emitting layer, the conductive channel comprising a sintered conductive material comprising at least one of a light emitting material of the second light emitting layer, a conductive material of a touch control lead wire in the second region, and a conductive material of the touch electrode layer.
 7. (canceled)
 8. (canceled)
 9. The touch display substrate of claim 1, wherein each second region is surrounded by the subpixel of the first color from the same pixel, the subpixel of the second color from a first adjacent pixel, and two subpixels of the third color respectively from a second and a third adjacent pixels; the first color, the second color, and the third color are different colors selected form red, green, and blue.
 10. The touch display substrate of claim 1, wherein each pixel comprises three pixel compensation circuits, each pixel compensation circuit is connected to one of the subpixel of the first color from a same pixel, the subpixel of the second color from a first adjacent pixel, and the subpixel of the third color from a second adjacent pixel.
 11. The touch display substrate of claim 1, wherein each pixel comprises four pixel, compensation circuits, each pixel compensation circuit is connected to one of the subpixel of the first color from a same pixel, the subpixel of the second color from a first adjacent pixel, the subpixel of the third color from a second adjacent pixel, and the subpixel of the third color from a third adjacent pixel.
 12. The touch display substrate of claim 1, wherein each pixel further comprises a touch subpixel in the second region, the touch electrode layer is configured to operate in a time-division driving mode, the time-division mode comprising a display mode and a touch control mode, the touch electrode layer is a touch control electrode for conducting touch signals during the touch control mode, and one second electrode block in the second region and the touch electrode layer are electrodes for applying voltage signal to the second light emitting layer during display mode; each pixel further comprises four pixel compensation circuits, each pixel compensation circuit is connected to one of the subpixel of the first color from a same pixel, the subpixel of the second color from a first adjacent pixel, the subpixel of the third color from a second adjacent pixel, and the touch subpixel.
 13. (canceled)
 14. (canceled)
 15. (canceled)
 16. (canceled)
 17. A touch display apparatus comprising a touch display substrate of claim
 1. 18. A pixel arrangement, comprising an array of a plurality of pixels, wherein each pixel comprises a subpixel of a first color, a subpixel of a second color, a subpixel of a third color, a touch subpixel; and a plurality of pixel compensation circuits in the touch subpixel; each pixel compensation circuit is connected to one of the subpixel of the first color from a same pixel, the subpixel of the second color and the subpixel of the third color from adjacent pixels; and each touch subpixel is surrounded by the subpixel of the first color from a same pixel, the subpixel of the second color from a first adjacent pixel, and two subpixels of the third color respectively from a second and a third adjacent pixels.
 19. The pixel arrangement of claim 18, wherein each pixel comprises three pixel compensation circuits, each pixel compensation circuit is connected to one of the subpixel of the first color from a same pixel, the subpixel of the second color from a first adjacent pixel, the subpixel of the third color from a second adjacent pixel.
 20. The pixel arrangement of claim 18, wherein each pixel comprises four pixel compensation circuits, each pixel compensation circuit is connected to one of the subpixel of the first color from a same pixel, the subpixel of the second color from a first adjacent pixel, the subpixel of the third color from a second adjacent pixel, and the subpixel of the third color from a third adjacent pixel.
 21. (canceled)
 22. A method of fabricating a touch display substrate, comprising forming an array of a plurality of pixels, each pixel comprising a first region and a second region in plan view of the touch display substrate; wherein forming each pixel comprising: forming a first electrode layer on a base substrate; the step of forming the first electrode layer comprising forming a plurality of first electrode blocks in the first region, each of which corresponding to a subpixel; and forming a second electrode block in the second region; forming a first light emitting layer in the lint region on a side of the plurality of first electrode blocks distal to the base substrate; forming a second light emitting layer in the second region on a side of the second electrode block distal to the base substrate; forming a second electrode layer in the first region on a side of the first light emitting layer distal to the plurality of first electrode blocks; forming a touch electrode layer in the second region on a side of the second light emitting layer distal to the second electrode block; the touch electrode layer and the second electrode layer spaced apart and electrically insulated from each other; and forming a pixel compensation circuit in the second region; wherein the first region comprises a subpixel of a first color, a subpixel of a second color, a subpixel of a third color, forming each pixel comprises forming a plurality of pixel compensation circuits in the second region, each of which connected to one of the subpixel of the first color from a same pixel, the subpixel of the second color and the subpixel of the third color from adjacent pixels; the method comprising: forming the array of the plurality of pixels so that each second region is surrounded by the subpixel of the first color from a same pixel, the subpixel of the second color from an adjacent pixel and two subpixels of the third color respectively from two other adjacent pixels.
 23. (canceled)
 24. The method of claim 22, further comprising forming a pattern spacer layer on the base substrate dividing each pixel into the first region and the second region; the pattern spacer layer spacing apart and electrically insulating the touch electrode layer and the second electrode layer; and the pattern spacer layer spacing apart and electrically insulating the first light emitting layer and the second light emitting layer; wherein the pattern spacer layer is made of a photoresist material, the step of forming each pixel comprising: depositing a photoresist layer on the base substrate haying the first electrode layer; exposing the photoresist layer with a mask plate having a pattern corresponding to the pattern spacer layer; developing the exposed photoresist layer thereby forming the pattern spacer layer; depositing an organic light emitting material layer on a side of the first electrode layer distal to the base substrate having the pattern spacer layer, thereby forming the first light emitting layer in the first region and the second light emitting layer in the second region; and depositing an electrode material layer on a side of the organic light emitting material layer distal to the first electrode layer, thereby forming the second electrode layer in the first region and the touch electrode layer in the second region.
 25. (canceled)
 26. The method of claim 24, further comprising electrically connecting one second electrode block in the second region to the touch electrode layer; wherein the step of electrically connecting the one second electrode block in the second region to the touch electrode layer comprises sintering a portion of a multilayer structure comprising the one second electrode block in the second region, the second light emitting layer, and the touch electrode layer; and forming a conductive channel in the second light emitting layer, the conductive channel comprising a sintered conductive material comprising at least one of a light emitting material, as conductive material of the one second electrode block, and a conductive material of the touch electrode layer.
 27. (canceled)
 28. (canceled)
 29. The method of claim 22 further comprising forming a plurality of electrode lead wires in the first region and a plurality of touch control lead wires in the second region in a same layer; and electrically connecting the plurality of touch control lead wires to the touch electrode layer through a conductive channel in the second light emitting layer, wherein the step of electrically connecting the plurality of touch control lead wires to the touch electrode layer comprises sintering a portion of a multilayer structure comprising a touch control lead wire in the second region, the second light emitting layer, and the touch electrode layer; and forming a conductive channel in the second light emitting layer, the conductive channel comprising a sintered conductive material comprising at least one of a light emitting material, a conductive material of the touch control lead wire, and a conductive material of the touch electrode layer.
 30. (canceled)
 31. The pixel arrangement of claim 18, wherein each pixel comprises four pixel compensation circuits, each pixel compensation circuit is connected to one of the subpixel of the first color from a same pixel, the subpixel of the second color from a first adjacent pixel, the subpixel of the third color from a second adjacent pixel, and the touch subpixel.
 32. The touch display substrate of claim 1, wherein the first light emitting layer is an integral white light emitting layer; each pixel further comprises a plurality of color filters on a side of the second electrode layer distal to the first light emitting layer, each of which corresponding to a subpixel. 